An Approach for Network Outage Detection from Drive-Testing Databases

Table 3

Problem-simulation confusion matrices.

Real class	8 features (only RSRP and RSRQ)			10 features (with CQI and PHR)
	Per.	HO	RLF	Per.	HO	RLF
Periodical (148693)	96.0%	2.9%	1.1%	96.2%	2.9%	0.9%
Handover (683)	13.3%	79.9%	6.8%	12.7%	81.4%	5.9%
Radio link failure (210)	3.3%	0.5%	96.2%	1.0%	1.0%	98.0%